It did only take us like 20 minutes to changes out Tony's diff on Friday, but lugging around diffs is a pain. Also the only way i've seen to get stubs is to get diff's, that can get pretty spendy. Tony's broke because he had a welded rear end, and got into a spot where one wheel was in the air, and the other one was spinning on some soft stuff, and when the one in the air came down, BOOM, the whole process was like 5 seconds. (kinda kewl in a way, the three of us on the top of the hill exclaimed "rear axle" at the same time, too bad it wasn't). I'll keep looking into a better option, but as Ken said, there is a point where the stronger parts will break the now weaker stock stuff.
D'oh, didn't know the wife was logged in!!!